Who invented random dot stereograms?
THE FIRST RANDOM dot stereogram was invented by Dr. Bela Julesz in 1959 as an experiment to test stereopsis, the ability to see in 3D. By using uniform, randomly distributed dots (fig. 1.), Dr. Julesz eliminated the depth cues that are inherent in recognizable images. Consider this example. First create a rectangle of randomly arranged dots. (fig 1). Within the rectangle select a group of dots that make up a small shape. In this example the small shape is a circle and the selected dots are the dots that fall within the area shown by the blue circle. (fig. 2).
